Adding CORS
Understand how to implement Cross-Origin Resource Sharing (CORS) in your ASP.NET Core backend to allow React applications to access REST APIs securely. This lesson guides you through configuring CORS policies and integrating them into the middleware pipeline to enable cross-origin browser requests while maintaining backend security.
We'll cover the following...
CORS
CORS stands for Cross-Origin Resource Sharing and is a mechanism that uses HTTP headers to tell a browser to let a web application run at certain origins (domains) so that it has permission to access certain resources on a server at a different origin.
In this section, we will start by trying to access our REST API from a browser application and discover that it isn't accessible. We will then add and configure CORS in the REST API and verify that it is accessible from a browser application.
Let's carry out the following ...